well these headers were build from 60 deg bends and i made the flanges from 1/2 flat stock , round my own cones for the collectors . mig welded the flanges to the tubes and just plan old gas welded the tubes together did some scuff pad buff'n , still have to do some finish welding but there were they need to be . granted it's not as tight as an a bodies . but its just a repair . get some j bends and build another tube or fix that one .
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